Description
A path traversal vulnerability in the Fireware OS Web UI on WatchGuard Firebox systems may allow a privileged authenticated remote attacker to execute arbitrary code in the context of an elevated system process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – < 2026.2, 12.6.1 – < 12.12 | 2026.2 |
Advisories 1
- WID-SEC-2026-0952 WatchGuard Firebox: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Apr 1, 2026
References
- https://psirt.watchguard.com/CVE-2026-3987 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009 vendor-advisory